| 1 | //volume.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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| 5 | * The code (may) include prototypes and comments (and maybe |
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| 6 | * other code fragements) from EsounD. |
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| 7 | * They are mostly copyrighted by Eric B. Mitchell (aka 'Ricdude) |
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| 8 | * <ericmit@ix.netcom.com>. For more information see AUTHORS.esd. |
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| 9 | * |
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| 10 | * This file is part of libroaresd a part of RoarAudio, |
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| 11 | * a cross-platform sound system for both, home and professional use. |
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| 12 | * See README for details. |
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| 13 | * |
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| 14 | * This file is free software; you can redistribute it and/or modify |
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| 15 | * it under the terms of the GNU General Public License version 3 |
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| 16 | * as published by the Free Software Foundation. |
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| 17 | * |
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| 18 | * RoarAudio is distributed in the hope that it will be useful, |
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| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | * GNU General Public License for more details. |
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| 22 | * |
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| 23 | * You should have received a copy of the GNU General Public License |
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| 24 | * along with this software; see the file COPYING. If not, write to |
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| 25 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 26 | * |
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| 27 | * NOTE for everyone want's to change something and send patches: |
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| 28 | * read README and HACKING! There a addition information on |
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| 29 | * the license of this document you need to read before you send |
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| 30 | * any patches. |
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| 31 | */ |
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| 32 | |
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| 33 | #define ROAR_USE_OWN_SNDIO_HDL |
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| 34 | #include "libroarsndio.h" |
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| 35 | |
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| 36 | int sio_setvol (struct sio_hdl * hdl, unsigned vol) { |
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| 37 | struct roar_mixer_settings mixer; |
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| 38 | int i; |
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| 39 | |
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| 40 | if ( hdl == NULL ) |
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| 41 | return 0; |
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| 42 | |
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| 43 | if ( vol > SIO_MAXVOL ) |
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| 44 | return 0; |
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| 45 | |
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| 46 | mixer.scale = 65535; |
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| 47 | mixer.rpg_mul = 1; |
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| 48 | mixer.rpg_div = 1; |
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| 49 | |
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| 50 | for (i = 0; i < hdl->info.channels; i++) |
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| 51 | mixer.mixer[i] = vol*65535/SIO_MAXVOL; |
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| 52 | |
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| 53 | if ( roar_set_vol(&(hdl->con), roar_stream_get_id(&(hdl->stream)), &mixer, hdl->info.channels) == -1 ) |
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| 54 | return 0; |
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| 55 | |
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| 56 | if ( hdl->on_vol != NULL ) |
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| 57 | hdl->on_vol(hdl->on_vol_arg, vol); |
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| 58 | |
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| 59 | return 1; |
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| 60 | } |
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| 61 | |
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| 62 | void sio_onvol (struct sio_hdl * hdl, void (*cb)(void * arg, unsigned vol), void * arg) { |
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| 63 | if ( hdl == NULL ) |
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| 64 | return; |
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| 65 | |
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| 66 | hdl->on_vol = cb; |
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| 67 | hdl->on_vol_arg = arg; |
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| 68 | } |
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| 69 | |
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| 70 | //ll |
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